理想正轴测投影作法

METHOD OF DRAWING IDEAL NORMAL AXONOMETRIC PROJECTION

首先提出了理想正轴测投影的重要性 .接着用公式法和图解法证明了作出理想正轴测投影所利用的几何机理 ,即投影线方向决定正轴测轴 (正轴测投影 )原理 .然后根据所要表达的理想效果要求 ,利用上述机理选择合适的投影线方向 ,再利用投影变换方法确定该合适的投影线方向所决定的正轴测轴 ,据此轴测轴绘制的轴测投影即为理想正轴测投影 .

The importance of the ideal normal axonometric projection is discussed first. Then, with the formula method and diagram, the geometric mechanism in drawing ideal normal axonometric projection is testified, i.e., the direction of projection line decides the normal axonometric projection axes (normal axonometric projection). Finally, the method of drawing the ideal normal axonometric projection is illustrated -- first choosing the proper direction for projection line as the ideal effect required, and then defining the normal axonometric projection axes with the method of projection transform, on the basis of which the ideal normal axonometric projection is drawn.